public class test9 {
    public static void main(String[] args) {
        int[] arr = {1,2,3,4,5,6,7,8,9,10};
        //定义计数器
        int count = 0;
        for(int i = 0;i < arr.length ;i++){
            if(arr[i] % 3 ==0){
                count++;
            }
        }
        System.out.println(count);
    }
}
